I have been driving My 72 Blazer some, it runs very well. Complete drive train swap from 93 Caprice wagon 5.7L TBI. Modified the dash with a glove box door and added a couple gauges. I may have burned up the original gauges soldering leads to the back, got a replacement to work with but really need the wiring diagram for the 34 pin back of the dash plug. I have not been able to find this anywhere, any help would be appreciated...Thanks Ed.